Development of kafirin-based nanocapsules by electrospraying for encapsulation of fish oil

Turgay Cetinkaya, Ana Carina Loureiro Mendes, Charlotte Jacobsen, Zafer Ceylan, Ioannis S. Chronakis, Scott R. Bean, Pedro Jesús García Moreno*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Kafirin-based fish oil nanocapsules were successfully obtained by using electrospraying technique. A kafirin isolate containing mostly α-kafirins, but also γ- and β-kafirins, was used as shell material. Electrospraying solutions with 10 wt% kafirin and fish oil (20 wt% with respect to kafirin) led to the production of nanocapsules (552 and 861 nm) when electrosprayed at 20–25 kV voltage with flow rates ranging from 0.5 to 1 mL/h. Neither the flow rate nor the voltage had a significant effect (p > 0.05) on the average diameter of the kafirin electrosprayed capsules loaded with fish oil. The encapsulation efficiency of the nanocapsules was up to 94.0 ± 2.5%, indicating that most of the fish oil was encapsulated within the kafirin shell. These results suggest the feasibility of obtaining kafirin-based capsules for the encapsulation of fish oil by electrospraying. This will open up new possibilities for kafirin as hydrophobic shell material for the production of fish oil encapsulates, which can be applied to the fortification with ω−3 fatty acids of food matrices.

Original languageEnglish
Article number110297
JournalLWT
Volume136
Number of pages8
ISSN0023-6438
DOIs
Publication statusPublished - 2021

Keywords

  • Electrospraying
  • Kafirin
  • Nanocapsules
  • Omega-3
  • Sorghum

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